Results 51 to 60 of about 17,902 (180)

Measurement of corneal astigmatism

Chinese Science Bulletin, 1998
Cornea is the most inportant optical surface in the eye dioptric system. Three kinds of methods in measuing corneal astigmeatism wre used. Three hundred and sixty eyes suffered ametropia were selected on a random basis. Computer-assisted corneal kpographic system was compared with keratometer and cycloplegic retinoscopy in measuring corneal curvature ...
Kui Zhang, Zhihui Li, Wenxiu Lu, Rong Xing   +3 more
openaire   +1 more source

Managing Corneal Astigmatism

UP Journal of Ophthalmology, 2023
Corneal astigmatism is a refractive error that creates an asymmetric blur in the vision. Corneal astigmatism can arise from trauma, disease, following surgery, or be congenital. In assessing corneal astigmatism, a decision should be made as to whether the astigmatic pattern is regular or irregular.
openaire   +1 more source

Agreement between ganglion cell‐inner plexiform layer metrics from widefield optical coherence tomography and Goldmann II, III, and V in glaucoma

Optometry and Vision Science, Volume 103, Issue 7, July 2026.
ABSTRACT Purpose To compare concordance between ganglion cell‐inner plexiform layer metrics acquired using widefield optical coherence tomography (OCT) and visual function assessed using Goldmann (G) II, III, and V stimulus sizes, in turn evaluating the role of spatial summation properties in binary classification of visual field (VF) results.
Janelle Tong, Jack Phu, David Alonso‐Caneiro, Jason Kugelman, Michael Kalloniatis, Ashish Agar, Minas Coroneo, Sieu Khuu   +7 more
wiley   +1 more source

Comparison of astigmatism prediction error taken with the Pentacam measurements, Baylor nomogram, and Barrett formula for toric intraocular lens implantation

BMC Ophthalmology, 2017
Background To evaluate and compare the astigmatism prediction errors taken with the Pentacam measurements, Baylor nomogram, and Barrett formula for toric intraocular lens (IOL) implantation.
Dae-Young Park, Dong Hui Lim, Sungsoon Hwang, Joo Hyun, Tae-Young Chung   +4 more
doaj   +1 more source

Femtosecond Laser Created Corneal Allogenic Intrastromal Ring Segments for Keratoconus

Clinical &Experimental Ophthalmology, Volume 54, Issue 5, Page 664-677, July 2026.
ABSTRACT Background To evaluate the clinical outcomes of femtosecond laser‐created corneal allogenic intrastromal ring segments (femto‐CAIRS) in keratoconic eyes using a newly described nomogram. Methods This retrospective case series recruited 85 eyes from 75 patients.
David J. Gunn, Rebecca A. Cox, Brendan Cronin   +2 more
wiley   +1 more source

Evaluation of Opposite Clear Corneal Incision in Controlling Astigmatism in Cataract Patients Undergoing Phacoemulsification Surgery

Delhi Journal of Ophthalmology, 2016
Aim: To evaluate the role of clear corneal incision combined with opposite clear corneal incision in controlling astigmatism in patients undergoing phacoemulsification surgery for cataract. Design: Prospective clinical study.
J. S. Bhalla, Meenakshi Rani, Surbhi Gupta   +2 more
doaj   +1 more source

Duration‐Dependent Efficacy and Clinical Safety of Repeated Low‐Level Red‐Light Therapy for Paediatric Myopia: A Systematic Review and Meta‐Analysis

Clinical &Experimental Ophthalmology, Volume 54, Issue 5, Page 630-652, July 2026.
ABSTRACT Background Repeated low‐level red‐light (RLRL) therapy is a novel, non‐invasive intervention for controlling paediatric myopia progression. Despite increasing clinical use, questions remain regarding the magnitude, durability, and safety of treatment effects.
Lee‐Yuan Lin, Cheng‐Hao Hsu, Hung Su, Jia‐Wei Sun, Jie‐Syuan Wu, Wei‐Jung Jeng, Chen‐Hsin Tsai, Fara Silvia Yuliani, Shyh‐Hsiang Lin   +8 more
wiley   +1 more source

Quality of Life in Myopia: Laser‐Assisted In Situ Keratomileusis Versus Contact Lenses

Eye &ENT Research, Volume 3, Issue 2, Page 75-82, June 2026.
ABSTRACT Background Laser‐assisted in situ keratomileusis (LASIK) and contact lenses are commonly used to correct refractive errors, but their effects on quality of life, patient satisfaction, and dry eye disease remain variable. This study compares these outcomes between LASIK and contact lens users.
Maisara Shehab, Ziad W. Elmezayen, Hashem Abu Serhan, Shawkat Shawkat, Shahd Mahmoud, Farah Afr, Marah Maysara Khayyal, Khaled Moghib, Mayar Hussam Rehan, Husam Abu Dawood, Albraa Ashraf Hamad   +10 more
wiley   +1 more source

A randomized crossover clinical trial of the Deseyne contact lens for presbyopia with extended depth of focus

Optometry and Vision Science, Volume 103, Issue 6, June 2026.
ABSTRACT Purpose To evaluate the visual performance of a new daily wear presbyopia contact lens (Deseyne contact lens for presbyopia with extended depth of focus). Methods This was a randomized, crossover, and nondispensing clinical trial. Seventy‐eight presbyopic (45–70 years, mean = 53.9 years) habitual soft contact lens wearers were recruited with ...
Mark A. Bullimore, Charles B. Slonim, Stephen M. Montaquila, Eddie Catalfamo, Giancarlo Montani   +4 more
wiley   +1 more source

Emerging Technologies for the Management and Mitigation of Myopia Progression: A Scoping Review

Health Science Reports, Volume 9, Issue 5, May 2026.
ABSTRACT Background and Aims Currently, myopia affects approximately 1,406 million individuals, representing 22.9% of the global population. Emerging technologies are transforming eye care by providing innovative approaches to address the global challenge of myopia progression.
Kingsley Ekemiri, Khathutshelo Percy Mashige, Diane B. van Staden, Katie Connolly, Okechi Ulumma Amaechi, Esther Daniel, Tiwabwork Tekalign   +6 more
wiley   +1 more source